Examples of com.atomikos.icatch.Participant

com.atomikos.icatch.Participant
A participant for (distributed) two-phase commit of composite transactions. Implementations can be added as a 2PC participant in the icatch kernel. VERY IMPORTANT: implementations should also override the default equals and hashCode methods, in order for two-phase commit to work properly!

        Vector participants = coordinator_.getParticipants ();
        int count = (participants.size () - readOnlyTable_.size ());
        Enumeration enumm = participants.elements ();
        ForgetResult result = new ForgetResult ( count );
        while ( enumm.hasMoreElements () ) {
            Participant p = (Participant) enumm.nextElement ();
            if ( !readOnlyTable_.containsKey ( p ) ) {
                ForgetMessage fm = new ForgetMessage ( p, result );
                propagator_.submitPropagationMessage ( fm );
            }

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      committed_=in.readBoolean();
      int size = in.readInt();
      readOnlyTable_ = new Hashtable<Participant, Boolean>(size);
      for (int i = 0; i < size; i++) {
      String participantClassName=in.readUTF();
      Participant participant=(Participant)ClassLoadingHelper.newInstance(participantClassName);
      ((DataSerializable)participant).readData(in);
      boolean value=in.readBoolean();
      readOnlyTable_.put(participant, value);
      
    }

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    {
        if ( queried_ )  throw new IllegalStateException ( "Adding extent no longer allowed" );
        addRemoteParticipants ( extent.getRemoteParticipants () );
        Enumeration<Participant> enumm = extent.getParticipants ().elements ();
        while ( enumm.hasMoreElements () ) {
            Participant part =  enumm.nextElement ();
            directs_.push ( part );
        }
    }

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    synchronized ( fsm_ ) {
      // cf case 61686 and case 62217: avoid concurrent enlists while recovering
      Iterator parts = getParticipants().iterator();
      while (parts.hasNext()) {
        Participant next = (Participant) parts.next();
        boolean recoveredParticipant = false;
        try {
          recoveredParticipant = next.recover();
           if ( LOGGER.isDebugEnabled() ) LOGGER.logDebug (  "coordinator: " + getCoordinatorId()
                + "recovered participant: " + next );
        } catch (Exception e) {
          // happens if XA connection could not be gotten or other problems
          LOGGER.logWarning("Error in recovering participant");

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            // A coordinator that is still in this state might not have notified
            // all its participants -> make sure replay happens
            Enumeration enumm = getCoordinator ().getParticipants ().elements ();
            Hashtable hazards = new Hashtable ();
            while ( enumm.hasMoreElements () ) {
                Participant p = (Participant) enumm.nextElement ();
                if ( !getReadOnlyTable ().containsKey ( p ) ) {
                    addToHeuristicMap ( p, TxState.HEUR_HAZARD );
                    hazards.put ( p, TxState.HEUR_HAZARD );
                }
            }

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     */


    protected Object send () throws PropagationException
    {
        try {
            Participant part = getParticipant ();
            part.forget ();


        } catch ( Exception e ) {
        }


        return getParticipant ();

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          replay = true;
            int count = replayStack.size ();
            TerminationResult result = new TerminationResult ( count );


            while ( !replayStack.empty () ) {
                Participant part = (Participant) replayStack.pop ();
                if ( committed ) {
                    CommitMessage cm = new CommitMessage ( part, result, false );
                    getPropagator ().submitPropagationMessage ( cm );
                } else {
                    RollbackMessage rm = new RollbackMessage ( part, result,

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         Enumeration enumm = null;
         Extent extent = ct_.getExtent ();
         if ( extent != null ) {
           enumm = extent.getParticipants ().elements ();
           while ( enumm.hasMoreElements () ) {
             Participant part = (Participant) enumm.nextElement();
             addParticipant ( part );
           }
         }


         ct_.localSetTransactionStateHandler ( new TxTerminatedStateHandler ( ct_, this, false ) );

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          ct_.getCoordinatorImp().addTag(ct_.tag_);


          Enumeration enumm = ct_.getExtent().getParticipants().elements();
          while ( enumm.hasMoreElements () ) {
            Participant part = (Participant) enumm.nextElement();
            addParticipant(part);


          }
        }

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     *                nature, then the error is transient.
     */


    protected Object send () throws PropagationException
    {
        Participant part = getParticipant ();
        HeuristicMessage[] msgs = null;
        try {
            msgs = part.commit ( onephase_ );
            return msgs;
        } catch ( RollbackException rb ) {
            throw new PropagationException ( rb, false );
        } catch ( HeurMixedException heurm ) {
            throw new PropagationException ( heurm, false );
        } catch ( HeurRollbackException heurr ) {
            throw new PropagationException ( heurr, false );
        } catch ( Exception e ) {
            // heuristic hazard or not, participant might be indoubt.
            // fill in exact heuristic messages by using buffer effect
            // of participant proxies.
            String msg = "Unexpected error in commit";
            LOGGER.logWarning ( msg, e );
            HeurHazardException heurh = new HeurHazardException ( part.getHeuristicMessages () );
            throw new PropagationException ( heurh, true );
        }
    }

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Related Classes of com.atomikos.icatch.Participant

com.atomikos.icatch.imp.ActiveStateHandler

com.atomikos.icatch.imp.CommitMessage

com.atomikos.icatch.imp.CoordinatorImp

com.atomikos.icatch.imp.CoordinatorStateHandler

com.atomikos.icatch.imp.ExtentImp

com.atomikos.icatch.imp.ForgetMessage

com.atomikos.icatch.imp.HeurHazardStateHandler

com.atomikos.icatch.imp.HeurMixedStateHandler

com.atomikos.icatch.imp.IndoubtStateHandler

com.atomikos.icatch.imp.PrepareMessage

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